In recent years, controversies have arisen over the construction of PX, an important chemical raw material used in everything from chemical fiber fabrics to food packaging, and in medical and pharmace

Test analysis: (1) According to the molecular structure model of paraxylene, it can be seen that a molecule of xylene consists of eight carbon atoms and ten hydrogen atoms constitute, so the chemical formula of xylene is) C 8 H 10 ;

(2) the mass ratio of carbon element to hydrogen element in xylene is 12×8:1×10=48:5;

(3) according to the description "PX is an important chemical raw material, from chemical fiber fabrics to food packaging, from medical equipment to household appliances, all of which are used in the synthesis of its products", so choose AB.